Paperdroid is an offline article reading Android app that integrates with the excellent service Read It Later and/or Google Reader.
Found an interesting but long article while surfing in a costly internet point? Skimming hastily through your feeds for worthy posts? Just save the page to Read It Later (via bookmarklet, the Firefox extension etc.) or star it in Google Reader and have Paperdroid automatically download it to your trusty Android phone for offline reading pleasure - later.